The government agency is blaming a "moist, unstable airmass" for the special weather statement in southern Ontario. Some thunderstorms may be particularly heavy, bringing 20 to 40 millimetres or more of precipitation to some regions today. Showers are expected to end later this afternoon as the skies clear up.
CBC meteorologist Jay Scotland says there's a slight shower risk through the morning while thunderstorms are possible in the late morning and afternoon. Temperatures are expected to sit in the mid-20s across the Golden Horseshoe with northerly winds picking up as the day progresses with the potential to eclipse 40 km/h.
We are a bit cooler than normal today, a few degrees below the seasonal average of 27 degrees, but the humidity is in the air is making it feel warmer.
Correction : Environment Canada issued a special weather statement of thunderstorms. An earlier version of this article incorrectly called it a warning.(Jul 14, 2015 10:50 AM)